import { asyncRouterMap, constantRouterMap } from "@/router";

/**
 * 通过meta.role判断是否与当前用户权限匹配
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
  // console.log(route)
  if (route.meta && route.meta.roles) {
    // console.log(route.meta.roles)
    return roles.some(role => route.meta.roles.includes(role));
  } else {
    return true;
  }
}

/**
 * 递归过滤异步路由表，返回符合用户角色权限的路由表
 * @param routes asyncRouterMap
 * @param roles
 */
function filterAsyncRouter(routes, roles) {
  const res = [];

  routes.forEach(route => {
    const tmp = { ...route };
    if (hasPermission(roles, tmp)) {
      if (tmp.children) {
        tmp.children = filterAsyncRouter(tmp.children, roles);
      }
      res.push(tmp);
    }
  });
  return res;
}

const permission = {
  state: {
    routers: [],
    addRouters: []
  },
  mutations: {
    SET_ROUTERS: (state, routers) => {
      state.addRouters = routers;
      state.routers = constantRouterMap.concat(routers);
      // state.routers = routers;
    }
  },
  actions: {
    GenerateRoutes({ commit }, data) {
      return new Promise(resolve => {
        //过滤路由表
        const { roles } = data;
        let accessedRouters;
        // if (roles.includes('admin')) {
        //   accessedRouters = asyncRouterMap
        // } else {
        let allRoutesMap = constantRouterMap.concat(asyncRouterMap);
        accessedRouters = filterAsyncRouter(allRoutesMap, roles);
        console.log("生成可访问的路由表====》", accessedRouters);
        commit("SET_ROUTERS", accessedRouters);
        resolve();
        // }
      });
    }
  }
};

export default permission;
